If I proclaim the gospel, this gives me no ground for boasting, for an obligation is laid on me, and woe betide me if I do not proclaim the gospel! For if I do this of my own will, I have a reward; but if not of my own will, I am entrusted with a commission. What then is my reward? Just this: that in my proclamation I may make the gospel free of charge, so as not to make full use of my rights in the gospel. (1 Corinthians 9:16-18)

Intercession

God and Source of the Word, as Thomas fulfilled the Dominican charism of preaching, move me to witness my faith with family and friends, and especially to those who do not yet know Christ.